# Air vent FLAMCO FLEXVENT TOP 1/2" model 28515, automatic automatic vent for heating and cooling systems

**URL:** https://aio.lv/en/product--flamco-28515--12258220
**Data updated:** 2026-04-14 22:30 (EEST)
**Category:** Heating Radiators
**Manufacturer:** FLAMCO
**Manufacturer code:** 28515
**EAN:** 8712874285156
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 84.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 69.83 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--flamco-28515--12258220

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

FLAMCO FLEXVENT TOP 1/2" (model 28515) is an automatic air vent designed for heating and cooling installations. It provides rapid removal of trapped air from radiators, boilers and pipework via a 1/2" connection. The device prevents noise, corrosion and flow disruption, improving system efficiency and reducing maintenance needs in residential and light commercial systems.

## Long description

FLAMCO FLEXVENT TOP 1/2" model 28515 is an automatic air vent intended for use in heating and cooling systems. Fitted with a 1/2" threaded connection, it removes trapped air from radiators, boilers and pipework to maintain steady circulation and reduce noise and corrosion. The compact design allows installation at high points in system layouts where air accumulates.
Advantages
The automatic vent operates without manual intervention, continuously discharging small amounts of air to prevent airlocks and flow disruption. By reducing trapped air, it helps lower noise levels and the risk of localized corrosion, supporting longer component life and more consistent heat transfer. Its standardized connection size simplifies replacement or integration into existing systems.
Suitable for
Domestic central heating systems including radiators and boilers
Light commercial heating and cooling installations
High points of pipework, manifolds and air collection zones
Retrofit projects where automatic air removal is required
When it may not be suitable
This device is designed for removing small volumes of entrained air and is not a substitute for system flushing or deaeration during commissioning. It may not be appropriate for large industrial systems with high flow rates or where specialized degassing equipment is specified. For systems using aggressive fluids or non-standard additives, compatibility with internal materials should be confirmed.
Key specifications
Connection: 1/2" threaded
Function: automatic air vent for heating and cooling circuits
Typical installation point: high points, radiators, boilers, manifolds
Operation: continuous automatic air discharge
How to use
Install the FLEXVENT TOP at a system high point or on radiator/boiler air vents using the 1/2" threaded connection. Ensure the vent is mounted vertically and accessible for inspection. Once connected and the system is filled and pressurised to normal operating conditions, the unit will automatically release trapped air; periodic checks can confirm proper operation and absence of leaks. If maintenance is required, isolate the section of the system and follow safe-drain procedures before removing the vent.
What to consider before purchase
Verify the required connection size is 1/2" to match existing fittings
Confirm suitability for the system fluid and operating pressures/temperatures
Check available mounting space and preferred installation point (vertical orientation)
Determine whether automatic venting alone is sufficient or if additional deaeration measures are needed
Usage recommendations
Place the automatic vent at the system's highest practical location and leave it accessible for periodic inspection. Combine with correct filling, flushing and inhibitor treatment to maintain system efficiency and minimize air-related issues.

## FAQ

### How much does the FLAMCO FLEXVENT TOP 1/2" air vent 28515 cost, and is it available for purchase?

The price is 84.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 07.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can FLAMCO FLEXVENT TOP 1/2" air vent 28515 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All FLAMCO products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized FLAMCO service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12258220/68169054_large.webp